CN210565814U

CN210565814U - Bearing end cover for hydraulic pump

Info

Publication number: CN210565814U
Application number: CN201921566089.2U
Authority: CN
Inventors: 沈玉柱
Original assignee: Changzhou Daquan Machinery Co ltd
Current assignee: Changzhou Daquan Machinery Co ltd
Priority date: 2019-09-19
Filing date: 2019-09-19
Publication date: 2020-05-19
Anticipated expiration: 2029-09-19

Abstract

The utility model provides a bearing end cover for hydraulic pump, the inner circle and the axis of rotation cooperation of bearing, the outer lane is fixed with the bearing end cover medial surface, and the bearing end cover is column structure and has interior installation cavity along the axis of rotation axial, and column structure has at least tertiary step-like structure from a left side to the right side, including the prelude canned paragraph, middle part canned paragraph and afterbody canned paragraph, the prelude canned paragraph comprises major arc and the line segment of connecting major arc both ends point along the axis of rotation radial cross-section, and the face at major arc place and the face at line segment place are the outer peripheral face of prelude canned paragraph, and the face at line segment place offsets with shells inner wall. The utility model has the advantages of reasonable design, can realize the whole fixed with the casing of bearing end cover when steadily fixing with the bearing inner race, effectively reduce the bearing end cover and take place radial torsional possibility along the axis of rotation to effective the top is tight fixed in side, has effectively improved the fixed steadiness of end cover, reduces the bearing end cover pine and takes off the risk, improves bearing installation steadiness reliability.

Description

Bearing end cover for hydraulic pump

Technical Field

The utility model relates to a hydraulic pump spare part technical field especially relates to a bearing end cover for hydraulic pump.

Background

The hydraulic pump is a power element of a hydraulic system, and is an element which is driven by an engine or an electric motor, sucks oil from a hydraulic oil tank, forms pressure oil, discharges the pressure oil and sends the pressure oil to an execution element. In order to maintain smooth operation of the respective parts during assembly of the hydraulic pump, the rotating members are connected by using bearings. The bearing passes through bearing cap and installs fixedly, and ordinary bearing cap cooperates the bearing to set up usually, and the shell is roughly cylindricality structure simultaneously, and in the fixed in-process of installation, it is fixed to need rely on axial power to push up tightly, but in long-term use, has the bearing cap pine to take off the risk, influences the installation steadiness ability of bearing, causes the operation of hydraulic pump not smooth.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: in order to overcome prior art not enough, the utility model provides a structural design is reasonable, can be convenient for in the axial push up tightly fixed in the footpath also can push up tightly, the end cover of being convenient for is fixed, reduces bearing end cover pine and takes off the risk, improves the bearing for the hydraulic pump bearing end cover of bearing installation steadiness reliability.

The utility model provides a technical scheme that its technical problem adopted is: a bearing end cover for a hydraulic pump is used for stably installing and connecting a bearing between a rotating shaft and a shell of the hydraulic pump, an inner ring of the bearing is matched with the rotating shaft, an outer ring of the bearing is fixed with the inner side surface of the bearing end cover, the bearing end cover is of a cylindrical structure along the axial direction of the rotating shaft, one side end surface of the cylindrical structure is concave and matched with the bearing outer ring to be provided with an inner installation cavity for the bearing outer ring to be embedded, matched and fixed, the cylindrical structure is of a step-shaped structure along the axial direction of the rotating shaft and is provided with at least three steps of step-shaped structures from left to right, wherein the step-shaped structure at the leftmost side is a head fixing section, the step-shaped structure at the rightmost side is a tail fixing section, the step-shaped structure between the head fixing section and; the head fixing section consists of a major arc and a line segment connecting two end points of the major arc along the radial section of the rotating shaft, the surface where the major arc is located and the surface where the line segment is located are the outer peripheral surface of the head fixing section, and the surface where the line segment is located is abutted to the inner wall of the shell; at least three positioning holes are uniformly distributed on the right side end face of the head fixing section at intervals around the rotating shaft, the centers of the positioning holes are positioned on the same circle, and the circle is concentric with the radial section of the rotating shaft; the outer peripheral surface of the middle fixing section is annularly inwards concave and provided with an annular caulking groove, the outer peripheral surface of the middle fixing section is in transitional connection with the end surface of the right side through an inwards concave arc-shaped groove, and the axial section of the arc-shaped groove along the rotating shaft is a 1/4 arc.

In order to facilitate the connection of the outer ring of the bearing and the inner mounting cavity, a central mounting hole is formed in the central position of the inner wall of the inner mounting cavity, and the outer ring of the bearing is fixedly connected with the inner mounting cavity through the central mounting hole.

Further, for the convenience of the bearing end cover is better fixed with the shell in a matched mode, the middle fixing section is in transitional connection with the tail fixing section through the arc-shaped embedded groove, and the arc-shaped embedded groove is annularly arranged at the end portion of the left side of the tail fixing section and is inwards concave and arranged on the outer peripheral face of the tail fixing section.

The beneficial effects of the utility model are that, the utility model provides a bearing cap for hydraulic pump, structural design is reasonable, through rational design's prelude canned paragraph, middle part canned paragraph and afterbody canned paragraph, can be with bearing inner race stationary step fixed while, realize the whole fixed with the casing of bearing cap, effectively reduce the bearing cap and take place radial torsional possibility along the axis of rotation to effective top tight fixed in side, effectively improved the fixed steadiness of end cover, reduce the bearing cap pine and take off the risk, improve bearing installation steadiness reliability.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a schematic structural diagram of the preferred embodiment of the present invention.

Fig. 2 is a right side view of fig. 1.

In the figure 1, an inner installation cavity 2, a central installation hole 3, a head fixing section 4, a middle fixing section 5, a tail fixing section 6, a positioning hole 7, an annular embedded groove 8, an arc-shaped groove 9 and an arc-shaped embedded groove.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.

Fig. 1 and 2 show a bearing end cap for a hydraulic pump, which is a preferred embodiment of the present invention, and is used to connect a bearing between a rotating shaft and a housing of the hydraulic pump. The inner ring of the bearing is matched with the rotating shaft, and the outer ring is fixed with the inner side surface of the bearing end cover.

The bearing end cover is of a columnar structure along the axial direction of the rotating shaft, and the end face of one side of the columnar structure is concave and matched with the bearing outer ring to form an inner installation cavity 1 for the embedding, matching and fixing of the bearing outer ring. The center position of the inner wall of the inner mounting cavity 1 is provided with a center mounting hole 2, and the outer ring of the bearing is fixedly connected with the inner mounting cavity 1 through the center mounting hole 2.

The columnar structure is of a step-shaped structure along the axial direction of the rotating shaft, and the columnar structure is provided with a three-stage step-shaped structure from left to right. Wherein, the step-shaped structure at the leftmost side is a head fixed section 3, and the step-shaped structure at the rightmost side is a tail fixed section 5. The step-shaped structure between the head fixing section 3 and the tail fixing section 5 is a middle fixing section 4, wherein the diameters of the outer peripheral surfaces of the head fixing section 3, the middle fixing section 4 and the tail fixing section 5 are reduced in sequence.

The head fixing section 3 is composed of a major arc and a line segment connecting two end points of the major arc along the radial section of the rotating shaft, the surface where the major arc is located and the surface where the line segment is located are the outer peripheral surface of the head fixing section 3, and the surface where the line segment is located is abutted to the inner wall of the shell.

Three positioning holes 6 are uniformly distributed on the right end face of the head fixing section 3 at intervals around the rotating shaft. The centers of the positioning holes 6 are positioned on the same circle, and the circle is concentric with the radial section of the rotating shaft. The three positioning holes 6 can be provided with bolts or pins and locked with the shell through the bolts or the pins, and the three positioning holes 6 can effectively position the right side end face of the head fixing section 3 because a plane is determined by the three points.

The annular indent has annular caulking groove 7 on the middle part fixed segment 4 outer peripheral face, then through the arc wall 8 transitional coupling of indent between the outer peripheral face of middle part fixed segment 4 and the right side terminal surface, arc wall 8 is the circular arc 1/4 along axis of rotation axial cross-section.

In order to facilitate the bearing end cover to be better fixed with the casing cooperation, intermediate part canned paragraph 4 and afterbody canned paragraph 5 between through the 9 transitional coupling of arc in caulking groove, the 9 annular settings of arc in caulking groove set up in 5 left side tip of afterbody canned paragraph and indent and the outer peripheral face setting of afterbody canned paragraph 5.

The bearing end cover for the hydraulic pump of so design, structural design is reasonable, and through reasonable design's prelude canned paragraph 3, middle part canned paragraph 4 and afterbody canned paragraph 5, can realize bearing end cover wholly with the fixed of casing when steadily fixing with the bearing inner race. Through the design of the head fixing section 3, the plane where the line segment is located is abutted and tightly pressed against the inner wall of the shell, and compared with the connection of the cylindrical surface of a common end cover, the possibility that the bearing end cover is radially twisted along the rotating shaft can be effectively reduced by one section of plane. And the design of the groove of each indent in middle part canned paragraph 4 and the afterbody canned paragraph 5, then the end cover of being convenient for is connected with the further cooperation of casing, has effectively improved the fixed steadiness of end cover, reduces the bearing end cover risk of coming loose, improves bearing installation steadiness reliability.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. The utility model provides a bearing end cover for hydraulic pump for with the firm erection joint of bearing between the axis of rotation and the casing of hydraulic pump, the inner circle and the axis of rotation cooperation of bearing, the outer lane is fixed its characterized in that with the bearing end cover medial surface: the bearing end cover is of a cylindrical structure along the axial direction of the rotating shaft, one side end face of the cylindrical structure is recessed inwards and is matched with the bearing outer ring to be provided with an inner installation cavity (1) for the bearing outer ring to be embedded, matched and fixed, the cylindrical structure is of a step-shaped structure along the axial direction of the rotating shaft and is provided with at least three steps of step-shaped structures from left to right, wherein the step-shaped structure on the leftmost side is a head fixing section (3), the step-shaped structure on the rightmost side is a tail fixing section (5), the step-shaped structure between the head fixing section (3) and the tail fixing section (5) is a middle fixing section (4), and the diameters of the outer peripheral surfaces of the head fixing section (3), the middle fixing section; the head fixing section (3) is composed of a major arc and a line segment connecting two end points of the major arc along the radial section of the rotating shaft, the surface where the major arc is located and the surface where the line segment is located are the outer peripheral surface of the head fixing section (3), and the surface where the line segment is located is abutted to the inner wall of the shell; at least three positioning holes (6) are uniformly distributed on the end surface of the right side of the head fixing section (3) at intervals around the rotating shaft, the centers of the positioning holes (6) are positioned on the same circle, and the circle is concentric with the radial section of the rotating shaft; the annular indent has annular caulking groove (7) on middle part fixed segment (4) outer peripheral face, then through the arc wall (8) transitional coupling of indent between the outer peripheral face of middle part fixed segment (4) and the right side terminal surface, arc wall (8) are along axis of rotation axial cross-section for 1/4 circular arc.

2. A bearing end cap for a hydraulic pump according to claim 1, wherein: the inner wall center position of the inner installation cavity (1) is provided with a center installation hole (2), and the outer ring of the bearing is fixedly connected with the inner installation cavity (1) through the center installation hole (2).

3. A bearing end cap for a hydraulic pump according to claim 1, wherein: middle part canned paragraph (4) and afterbody canned paragraph (5) between through caulking groove (9) transitional coupling in the arc, caulking groove (9) annular set up in afterbody canned paragraph (5) left side tip and indent and the outer peripheral face setting of afterbody canned paragraph (5).